Characterization of the size and location of dyssynchronous regions in patients undergoing CRT
نویسندگان
چکیده
Background The amount and location of left ventricular (LV) mechanical dyssynchrony affects an individual’s ability to respond positively to cardiac resynchronization therapy (CRT) [Bax et al JACC 2005]. By using high temporal resolution short-axis cines, it is possible to derive radial motion curves throughout the LV. These radial motion curves can be used to create maps showing dyssynchronous regions in patients enrolled for CRT. The objective of this study was to characterize the size and location of areas of mechanical dyssynchrony in patients scheduled for CRT by comparing their radial wall motion curves to radial motion curves from normal subjects.
منابع مشابه
Identification of the size and location of dyssynchronous regions in patients undergoing CRT
Background It has been shown that both the degree of LV mechanical dyssynchrony and the location of the latest contracting segment of the LV affect an individual’s ability to respond positively to CRT [Bax et al JACC 2005]. From high temporal resolution short-axis SSFP images, maps of regional mechanical contraction times throughout the LV can be generated. These maps show regional dyssynchrony...
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ecently published studies have emphasized the technical ifficulty of assessing mechanical left ventricular (LV) synhrony in patients undergoing cardiac resynchronization herapy (CRT). The failure of a large, multicenter study to dentify benefit from CRT in dyssynchronous, narrow omplex heart failure (1), as well as the failure of synchrony arkers to predict success of CRT (2), has cast a cloud ...
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